Chemistry:Terbium(III) iodide
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| Names | |
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| Other names
terbium triiodide
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| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
| EC Number |
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PubChem CID
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| Properties | |
| TbI3 | |
| Molar mass | 539.638 g/mol |
| Appearance | hygroscopic crystals |
| Density | 5.2 g/cm3, solid |
| Melting point | 957 °C (1,755 °F; 1,230 K) |
| Structure | |
| hexagonal | |
| Hazards | |
| GHS pictograms |  
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| GHS Signal word | Warning |
| H317, H361 | |
| P201, P202, P261, P264, P271, P272, P280, P281, P302+352, P304+340, P305+351+338, P308+313, P312, P332+313, P333+313, P337+313, P362, P363, P403+233, P405, P501 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
 verify (what is   ?)
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| Infobox references | |
Terbium(III) iodide (TbI3) is an inorganic chemical compound.
Preparation
Terbium(III) iodide can be produced by reacting terbium and iodine.[2]
- 2 Tb + 3 I
2 → 2 TbI
3
Terbium iodide hydrate can be crystallized from solution by reacting hydriodic acid with terbium, terbium(III) oxide, terbium hydroxide or terbium carbonate:
- 2 Tb + 6 HI → 2 TbI
3 + 3 H
2↑ - Tb
2O
3 + 6 HI → 2 TbI
3 + 3 H
2O - 2 Tb(OH)
3 + 6 HI → 2 TbI
3 + 3 H
2O - Tb
2(CO
3)
3 + 6 HI → 2 TbI
3 + 3 H
2O + 3 CO
2
An alternative method is reacting terbium and mercury(II) iodide at 500 °C.[3]
Structure
Terbium(III) iodide adopts the bismuth(III) iodide (BiI3) crystal structure type,[4][3] with octahedral coordination of each Tb3+ ion by 6 iodide ions.[5]
References
- ↑ "Terbium iodide (TbI3)" (in en). https://pubchem.ncbi.nlm.nih.gov/compound/83747#section=Safety-and-Hazards.
- ↑ WebElements: Chemical reactions of the element Terbium
- ↑ 3.0 3.1 Asprey, L. B.; Keenan, T. K.; Kruse, F. H. (1964). "Preparation and Crystal Data for Lanthanide and Actinide Triiodides". Inorg. Chem. 3 (8): 1137–1141. doi:10.1021/ic50018a015. https://digital.library.unt.edu/ark:/67531/metadc867868/.
- ↑ Wells, A. F. (1984). Structural Inorganic Chemistry (5th ed.). Oxford University Press. p. 421. ISBN 978-0-19-965763-6.
- ↑ Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. pp. 1240–1241. ISBN 978-0-08-037941-8.
| HI | He | ||||||||||||||||
| LiI | BeI2 | BI3 | CI4 | NI3 | I2O4, I2O5, I4O9 |
IF, IF3, IF5, IF7 |
Ne | ||||||||||
| NaI | MgI2 | AlI3 | SiI4 | PI3, P2I4 |
S | ICl, ICl3 |
Ar | ||||||||||
| KI | CaI2 | Sc | TiI4 | VI3 | CrI3 | MnI2 | FeI2 | CoI2 | NiI2 | CuI | ZnI2 | Ga2I6 | GeI2, GeI4 |
AsI3 | Se | IBr | Kr |
| RbI | SrI2 | YI3 | ZrI4 | NbI5 | Mo | Tc | Ru | Rh | Pd | AgI | CdI2 | InI3 | SnI4, SnI2 |
SbI3 | TeI4 | I | Xe |
| CsI | BaI2 | HfI4 | TaI5 | W | Re | Os | Ir | Pt | AuI | Hg2I2, HgI2 |
TlI | PbI2 | BiI3 | Po | AtI | Rn | |
| Fr | RaI2 | Rf | Db | Sg | Bh | Hs | Mt | Ds | Rg | Cn | Nh | Fl | Mc | Lv | Ts | Og | |
| ↓ | |||||||||||||||||
| La | Ce | Pr | Nd | Pm | SmI2 | Eu | Gd | TbI3 | Dy | Ho | Er | Tm | Yb | Lu | |||
| Ac | ThI4 | Pa | UI3, UI4 |
Np | Pu | Am | Cm | Bk | Cf | EsI3 | Fm | Md | No | Lr | |||
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